ZYH Shanghai ZYH Biotechnology
Vials tend to hold more than the label (median +14.3%); 1 of 4 vials was more than 10% under.
For research use only. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings. How scores work
Every vial we have on file
- Within ±5% / purity 99%+
- 5–20% under, overfilled / purity 95–99%
- Failed: over 20% under, over 50% over, empty or under 95% pure
Dose vs label
4 vials measured · 0 emptyPurity
4 vials measured- Median purity
- 99.35%
- across 4 vials
- Median dose vs label
- +14.3%
- across 4 vials; + means more than the label
- Failed vials
- 25.0%
- 1 of 4 vials; the rate weights each lab report equally and recent reports more, as the score does
- Lab reports
- 4
- Dec 16, 2024 to Jun 26, 2025
Labs: Janoshik
Key facts
- VendorVerify holds third-party lab results for 4 ZYH vials from 4 lab reports, dated Dec 2024 to Jun 2025.
- 1 of 4 ZYH vials failed: empty, under 95% pure, more than 20% under the label or more than 50% over it.
- The median ZYH vial tested at 99.35% purity across 4 vials with a purity result.
- The median ZYH vial held +14.3% compared with its label across 4 vials where the lab measured the amount.
- Buyers have had 4 different compounds from ZYH lab tested.
- ZYH is not ranked because it has fewer than the 5 lab reports a vendor needs to be ranked.
- ZYH vials on file were tested by Janoshik.
By peptide
| Peptide | Vials | Failed | Median purity | Median dose vs label | Dose vs label, −20% to +20% |
|---|---|---|---|---|---|
| Ipamorelin | 1 | 0 | 99.83% | +17.6% | |
| Mazdutide | 1 | 0 | 99.46% | −19.3% | |
| Retatrutide | 1 | 1 | 99.25% | +53.5% | |
| Tirzepatide | 1 | 0 | 98.55% | +11.0% |
Lab reports
One row per tested vial, newest first.
| Date | Peptide | Lab | Label | Measured | Dose vs label | Purity |
|---|---|---|---|---|---|---|
| Jun 26, 2025 | IpamorelinBatch ordered April 2025 blue cap | Janoshik | 10 mg | 11.76 mg | +17.6% | 99.83% |
| Apr 2, 2025 | RetatrutideBatch Red caps | Janoshik | 10 mg | 15.35 mg | +53.5% | 99.25% |
| Dec 23, 2024 | MazdutideBatch Silver cap | Janoshik | 12.5 mg | 10.09 mg | −19.3% | 99.46% |
| Dec 16, 2024 | TirzepatideBatch ZYH Yellow cap ( 12/ 24) | Janoshik | 15 mg | 16.65 mg | +11.0% | 98.55% |
ZYH: common questions
Is ZYH legit?
We can't vouch for any vendor as a business, and we don't sell or recommend products. What we can show is what buyers' independent lab tests found: 1 of 4 ZYH vials on file failed, meaning they were empty, under 95% pure, more than 20% under the label or more than 50% over it. ZYH has 4 lab reports on file, fewer than the 5 needed to be ranked, so treat this as early data. Results on file run from Dec 2024 to Jun 2025.
Has ZYH been third-party tested?
Yes. We hold results for 4 ZYH vials from 4 lab reports, tested by Janoshik. Each result comes from a lab report a buyer paid for, not from a certificate the vendor supplied.
Are ZYH vials dosed correctly?
Across 4 vials where the lab measured the amount, the median ZYH vial held +14.3% compared with its label. 1 of 4 held more than 10% less than the label said.
How pure is ZYH?
The median ZYH vial tested at 99.35% purity across 4 vials with a purity result. We count anything under 95% as a failed vial, and a vial at 99.5% or higher gets full marks for purity.
Does ZYH pay to be listed or ranked?
No. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings. A vendor's place comes only from lab results.
Will my ZYH vial match these results?
Not necessarily. A lab report describes the vials that were tested, and batches differ. A clean record lowers the odds of a bad vial but doesn't rule one out, which is why newer reports count for more in the score.
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